Global Patent Index - EP 0438421 B2

EP 0438421 B2 2000-04-26 - IMPROVED PROCESS FOR HIGH SPEED, MULTI-END POLYESTER HIGH PERFORMANCE TIRE AND INDUSTRIAL YARN

Title (en)

IMPROVED PROCESS FOR HIGH SPEED, MULTI-END POLYESTER HIGH PERFORMANCE TIRE AND INDUSTRIAL YARN

Title (de)

VERFAHREN ZUR HERSTELLUNG VON HOCHLEISTUNGSFÄHIGEM MULTIENDPOLYESTER FÜR HOCHGESCHWINDIGKEITSREIFEN UND FÜR INDUSTRIEGARN

Title (fr)

PROCEDE AMELIORE DE PRODUCTION A VITESSE ELEVEE, DE PNEU ET DE FIL INDUSTRIEL EN POLYESTER DE HAUT RENDEMENT A MULTIPLES EXTREMITES

Publication

EP 0438421 B2 (EN)

Application

EP 89910037 A

Priority

  • US 8903230 W
  • US 25828188 A

Abstract (en)

[origin: US4851172A] An improvement in a high speed process to produce high performance multi-end polyester yarn comprises extruding molten polyester from a spinnerette to form filaments, then cooling, lubricating and advancing the filaments to a forwarding roll system at the speed of from about 1000-4000 meters per minute so that a partially oriented yarn is produced, then feeding the filaments from the forwarding roll system to a first draw roll system to partially draw the yarn, then feeding the paritally drawn yarn to a second draw roll system having a draw point localizing device then feeding the filaments from the draw roll system to a conditioning roll system and finally taking up the filaments. The improvement is the use of matte finish on godet rolls having an arithmetic mean roll surface roughness value of from between about 35 microinches and about 120 microinches to feed and withdraw yarn to and from a draw point localizing device in the second draw roll system. This combination enables multiple ends of the filaments to be advanced through a single set of forwarding, drawing and conditioning rolls and yarn mechanical quality remains at a high level of acceptance.

IPC 1-7 (main, further and additional classification)

D01F 6/62; D01D 5/16

IPC 8 full level (invention and additional information)

D01F 6/62 (2006.01); D01D 5/16 (2006.01); D02G 3/48 (2006.01); D02J 1/22 (2006.01)

CPC (invention and additional information)

D01D 5/16 (2013.01); D02J 1/22 (2013.01)

Designated contracting state (EPC)

CH DE FR GB IT LI

DOCDB simple family

US 4851172 A 19890725; AU 4202389 A 19900501; AU 636852 B2 19930513; BR 8907707 A 19910730; CA 1328156 C 19940405; CN 1041791 A 19900502; CN 1070935 C 20010912; DE 68926346 D1 19960530; DE 68926346 T2 19960905; DE 68926346 T3 20001214; EP 0438421 A1 19910731; EP 0438421 B1 19960424; EP 0438421 B2 20000426; ES 2015802 A6 19900901; JP 2749168 B2 19980513; JP H04501141 A 19920227; KR 0136113 B1 19980428; MX 165164 B 19921029; TR 26223 A 19940127; WO 9004055 A1 19900419